关键词: 无线体域网, 联盟区块链, 共识算法, 身份管理, 记账节点

Abstract:

In order to solve the problem that sensor data are vulnerable in the process of transmission and storage in Wireless Body Area Networks（WBAN）, this paper introduces a decentralized alliance blockchain technology and proposes a scheme to protect the users’ data in body area networks with blockchain. Hyperledger Fabric is used to build the alliance blockchain. The distributed accounting and consensus algorithm are used to protect the integrity and non-tampering of users’ data in the alliance blockchain. On the other hand, the technologies of identity management, channel and private data are used to protect the privacy of users’ data. In this paper, every sensor in the body area network becomes a node of alliance blockchain. Thus, it is proposed which making two sensors communicate on the blockchain rather than the body area network. The results of experiment show that sensors keep low power consumption while ensuring the safety of sensors’ data.

Key words: wireless body area network, alliance blockchain, consensus algorithm, identity management, accounting node